﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace IllustratedCsharp7_ch21chapt21_4GUIMessagePump
{
    /// <summary>
    /// AsyncLambda.xaml 的交互逻辑
    /// </summary>
    public partial class AsyncLambda : Window
    {
        public AsyncLambda()
        {
            InitializeComponent();
            startWorkButton.Click += async (sender, e) =>
             {
                 SetGuiValues(false, "Work Started");
                 await DoSomeWork();
                 SetGuiValues(true, "Work Finished");
             };
        }

        private void SetGuiValues(bool buttonEnabled, string status)
        {
            startWorkButton.IsEnabled = buttonEnabled;
            workStartedTextBlock.Text = status;
        }
        private Task DoSomeWork()
        {
            return Task.Delay(2500);
        }
    }
}
